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Problem set. Graph Theory Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2676
582
1008
Image Encoding
USTU PhysTech Cup 2000
4261
365
1016
Cube on the Walk
USU Local Contest. 1999
1889
819
1022
Genealogical Tree
Autumn School Contest 2000
10979
141
1033
Labyrinth
Ural Championship 1999
6562
236
1035
Cross-stitch
Ural Championship 1999
1121
1367
1040
Airline Company
USU Championship 2000
1523
1001
1045
Funny Game
USU Local Contest. March 2000
2906
520
1056
Centers of the Net
NEERC 2000 Central Subregional
2742
550
1065
Frontier
NEERC 2000
1008
1407
1069
Prufer Code
USU Personal Contest 2001
2688
516
1072
Routing
USU Personal Contest 2001
2765
502
1076
Trash
1940
710
1077
Travelling Tours
1256
396
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7239
190
1085
Meeting
Spring School Contest 2001
2177
624
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1822
708
1099
Work Scheduling
1010
1150
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6752
74
1109
Conference
Bulgarian Online Contest September 2001
1996
250
1119
Metro
Autumn School Contest 2001
7172
70
1124
Mosaic
USU Championship 2001
1672
298
1128
Partition into Groups
USU Championship 2001
1208
412
1129
Door Painting
USU Championship 2001
1223
407
1136
Parliament
NEERC 2001 Central Subregional
5020
100
1137
Bus Routes
NEERC 2001 Central Subregional
1547
322
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1402
356
1156
Two Rounds
Ural Championship 2001. Round 2
1520
328
1160
Network
NEERC 2001 Northern Subregional
3467
146
1162
Currency Exchange
NEERC 2001 Northern Subregional
2539
197
1176
Hyperchannels
USU Personal Contest 2002
1496
334
1182
Team Them Up!
NEERC 2001
971
514
1198
Jobbery
1062
488
1199
Mouse
131
3399
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2115
237
1208
Legendary Teams Contest
USU Local Contest. March 2002
2353
213
1210
Kind Spirits
Autumn School Contest 2002
3103
163
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1558
324
1227
Rally Championship
NEERC 2002 Central Subregional
1674
302
1237
Evacuation Plan
NEERC 2002
507
985
1242
Werewolf
USU Personal Contest 2003
2879
177
1250
Sea Burial
USU Local Contest. March 2003
690
729
1254
Die Hard
USU Local Contest. March 2003
783
644
1270
Unicube
USU Championship 2003
205
2391
1271
Sailing Directions
USU Championship 2003
101
4632
1272
Non-Yekaterinburg Subway
USU Championship 2003
3486
147
1277
Cops and Thieves
NEERC 2003 Central Subregional
642
789
1280
Topological Sorting
NEERC 2003 Central Subregional
3628
141
1281
River Basin
NEERC 2003 Central Subregional
363
1379
1291
Gear-wheels
Spring School Contest 2004
1332
385
1301
Cube in Labyrinth
Ural Championship 1998
687
741
1314
Chase in Subway
Ural Championship 2004. Round 1
869
588
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
268
1859
1320
Graph Decomposition
Ural Championship 2004. Round 2
1791
287
1323
Classmates
Ural Championship 2004. Round 2
616
826
1325
Dirt
Ural Championship 2004. Round 2
952
537
1329
Galactic History
Autumn School Contest 2004
1120
460
1337
Bureaucracy
Autumn School Contest 2004
325
1551
1338
Automobiles
USU Championship 2004
280
1797
1339
Babies
USU Championship 2004
595
861
1358
Cables
Spring School Contest 2005
952
542
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
256
1962
1367
Top Secret
Ural Championship 2005. Round 2
164
3000
1379
Cups Transportation
Ural Championship 2005. Round 1
847
611
1392
Dreaming of Stars
673
766
1399
Economical Director
37
10196
1400
Cellular Characters
Autumn School Contest 2005
941
550
1416
Confidential
USU Championship 2005
1311
395
1419
Maps of the Island Worlds
USU Championship 2005
418
1219
1421
Credit Operations
Timus Top Coders: First Challenge
929
544
1434
Buses in Vasyuki
USU Personal Contest 2006
560
894
1441
From the History of Gringotts Bank
Ural Championship 2006
433
1144
1447
Portkey Network
Ural Championship 2006
501
992
1449
Credit Operations 2
Timus Top Coders: Second Challenge
328
1491
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3283
153
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
99
4484
1487
Chinese Football
USU Championship 2006
373
1273
1500
Pass Licenses
NEERC 2006 Eastern Subregional
750
639
1505
Oil Transfer
NEERC 2006 Eastern Subregional
157
2907
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
396
1169
1533
Fat Hobbits
USU Personal Contest 2007
468
991
1544
Classmates 3
Ural Championship 2007
364
1254
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
245
1784
1569
Networking the “Iset”
USU Championship 2007
483
920
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
516
861
1580
Dean's Debts
Autumn School Contest 2007
496
895
1610
Cactuses
Ural Championship 2008
206
2027
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
125
3153
1630
Talisman
USU Championship 2008
405
1014
1641
Duties
Autumn School Contest 2008
824
503
1643
Attack of the Dark Fortress
Autumn School Contest 2008
977
425
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1209
344
1652
Banking Crisis
NEERC 2008 Eastern Subregional
144
2722
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
200
1976
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
228
1736
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
120
3138
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
368
1079
1709
Penguin-Avia
Ural Championship 2009
2639
153
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
665
579
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1227
309
1770
The Party of Ural Champions
Ural Championship 2010
206
1740
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1891
189
1833
Hopes of Rowing
Ural Championship 2011
161
2025
1837
Isenbaev's Number
Ural Championship 2011
5826
59
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
67
4359
1882
Old Nokia
Ural Regional School Programming Contest 2011
112
2730
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
717
457
1905
Travel in Time
Ural Championship 2012
263
1125
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
231
1272
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1838
166
1934
Black Spot
Ural FU Championship 2012
854
353
1966
Cycling Roads
Ural FU Personal Contest 2013
415
681
1980
Road to Investor
Ural Championship 2013
439
638
1982
Electrification Plan
Ural FU Championship 2013
2128
131
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
262
945
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
180
1352
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
497
505
2034
Caravans
Ural Regional School Programming Contest 2014
892
284
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
94
2448
2055
Urban Geography
Ural Championship 2015
151
1512
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
149
1357
2113
Survive the flood
University academic school olympiad in informatics 2019
360
417
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
30
3810
2128
Rubina's Solitaire
Later is better than never
137
1006
2132
Graph Decomposition. Version 2
Later is better than never
89
1494
2140
BitMazeCraft
Ural School Programming Contest 2019
114
1154
2147
City Building
Ural School Programming Contest 2019
66
1882
2155
Quadrocopter
Ural School Programming Contest 2020
104
1024
2159
Essay
Ural School Programming Contest 2021
37
1433
2169
City Building 2
Ural School Programming Contest 2022
23
2038
2174
Dualism of Numbers
Ural School Programming Contest 2023
35
870
2180
Need More Tasks
Ural School Programming Contest 2023
12
1778
2187
Need More Gold
Ural School Programming Contest 2024
13
1700
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
18
1399
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
10
1958
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
18
1395
Solved problems:
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